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What differences, if any, between C++03 and C++11 can be detected at run-time?
...to write a function, which, when compiled with a C compiler will return 0, and when compiled with a C++ compiler, will return 1 (the trivial sulution with
#ifdef __cplusplus is not interesting).
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Fastest way to get the first object from a queryset in django?
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Use the convenience methods .first() and .last():
MyModel.objects.filter(blah=blah).first()
They both swallow the resulting exception and return None if the queryset returns no objects.
These were added in Django 1.6, which was released in Nov 2013.
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How do I get a div to float to the bottom of its container?
I have floated images and inset boxes at the top of a container using float:right (or left) many times. Recently I hit a need to float a div at the bottom right corner of another div with the normal text wrap that you get with float (text wrapped above and to the left only).
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MySQL Fire Trigger for both Insert and Update
Is it possible to fire a mysql trigger for both the insert and update events of a table?
3 Answers
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Manually raising (throwing) an exception in Python
...catch this')
raise Exception('This is the exception you expect to handle')
except Exception as error:
print('Caught this error: ' + repr(error))
>>> demo_bad_catch()
Caught this error: ValueError('Represents a hidden bug, do not catch this',)
Problem 2: Won't catch
A...
How to convert a currency string to a double with jQuery or Javascript?
... .00 trailing. Otherwise valid representations of currency such as "$1100" and "$1100." will be reduced by two orders of magnitude.
– Brian M. Hunt
Feb 8 '13 at 0:43
21
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Git will not init/sync/update new submodules
...rl should do the trick. One can cross check this by
git config --list
and one should get an entry of the submodule you want to pull in the result of the git config --list command. If there is an entry of your submodule in the config result, then now the usual git submodule update --init should ...
Should I use a class or dictionary?
I have a class that contains only fields and no methods, like this:
9 Answers
9
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What's the most efficient way to test two integer ranges for overlap?
Given two inclusive integer ranges [x1:x2] and [y1:y2], where x1 ≤ x2 and y1 ≤ y2, what is the most efficient way to test whether there is any overlap of the two ranges?
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Is there a better way to express nested namespaces in C++ within the header
I switched from C++ to Java and C# and think the usage of namespaces/packages is much better there (well structured). Then I came back to C++ and tried to use namespaces the same way but the required syntax is horrible within the header file.
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